.no-margin {
  margin: 0 !important;
}
.no-padding {
  padding: 0 !important;
}
.uc {
  text-transform: uppercase;
}
.c-normal {
  text-transform: none;
}
.light {
  font-weight: 200;
}
.bold {
  font-weight: bold;
}
.p0 {
  padding: 0;
}
.m0 {
  margin: 0;
}
.no-bottom-margin {
  margin-bottom: 0 !important;
}
.p10 {
  padding: 10px;
}
.color-white {
  color: #ffffff;
}
.color-black {
  color: #222222;
}
.color-gray {
  color: #999999;
}
.color-blue {
  color: #469dd7;
}
.pointer {
  cursor: pointer;
}
.absolute {
  position: absolute;
}
.relative {
  position: relative;
}
.no-min-height {
  min-height: 0 !important;
}
.no-deco {
  text-decoration: none;
  color: inherit;
  font-size: inherit;
  text-shadow: none;
}
.no-deco:hover {
  text-decoration: none;
  color: inherit;
}
.btn,
.form-control,
.panel,
.breadcrumb,
.tooltip-inner,
.alert,
.modal-content {
  border-radius: 0;
  -moz-border-radius: 0;
  -webkit-border-radius: 0;
}
.btn-blue {
  background-color: #469dd7;
  border-color: #2585c4;
  color: #FFFFFF;
}
.btn-blue:hover,
.btn-blue:focus {
  background-color: #3e8abd;
  border-color: #3a81b0;
  color: #FFFFFF;
}
html,
body {
  font-family: 'Open Sans', sans-serif;
  color: #444;
  height: 100%;
  background-color: #f5f5f5;
  font-size: 16px;
  line-height: 1.6;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 400;
  color: #222222;
  margin-top: 0;
}
h1 {
  font-size: 45px;
  letter-spacing: 3px;
  margin-bottom: 15px;
}
.abs-center {
  display: table-cell;
  vertical-align: middle;
  text-align: center;
  position: relative;
}
.vertical-center {
  display: table-cell;
  vertical-align: middle;
  position: relative;
}
.full-height {
  height: 100%;
  min-height: 100%;
}
.sticky {
  width: 100%;
  position: relative;
  z-index: 5000;
}
header {
  position: absolute;
  background-color: #ffffff;
  width: 100%;
  height: 43px;
  z-index: 1300;
  box-shadow: 0 6px 12px rgba(0,0,0,0.1176);
  -moz-box-shadow: 0 6px 12px rgba(0,0,0,0.1176);
  -webkit-box-shadow: 0 6px 12px rgba(0,0,0,0.1176);
}
header nav .home-item-wrapper {
  position: absolute;
  z-index: 1200;
  margin-left: -35px;
  left: 50%;
  cursor: pointer;
}
header nav .home-item-wrapper .home-item {
  background-color: #444;
  display: table-cell;
  vertical-align: middle;
  color: white;
  width: 70px;
  height: 70px;
  font-size: 40px;
  transition: all .3s;
  -webkit-transition: all .3s;
}
header nav .nav-item {
  color: #999999;
  padding: 10px 13px;
  display: block;
  font-family: 'Montserrat', sans-serif;
  border-bottom: 3px solid transparent;
  transition: all .3s;
  -webkit-transition: all .3s;
  font-size: 13px;
}
header nav .nav-item:not(.nohover):hover,
header nav .nav-item.active {
  text-decoration: none;
  color: #444;
  background: #f0f0f0;
}
header .openMobileNav {
  display: none;
}
header .openMobileNav .nav-item {
  color: #444;
}
.bg-wood {
  background-image: url(/assets/images/background.jpg);
  background-attachment: fixed;
}
.heading h1,
.heading h2 {
  padding: 0;
  margin: 0;
}
.heading h1 {
  font-weight: 700 !important;
  font-size: 40px;
}
.heading h2 {
  font-size: 25px;
}
.referenzen [class*="col-"] {
  margin-bottom: 30px;
}
.referenzen .thumb {
  max-height: 180px;
  overflow: hidden;
}
.referenzen .loadHidden {
  opacity: 0;
}
.footer {
  padding-top: 15px;
  padding-bottom: 15px;
}
section:nth-child(even) {
  background-color: #F5F5F5;
}
section:nth-child(odd) {
  background-color: #ffffff;
}
section.landing {
  width: 100%;
  height: 100%;
  background-color: #222222;
}
section.landing .logo {
  margin-bottom: 35px;
}
section.landing .container {
  width: 100%;
  height: 100%;
}
section.landing .content {
  height: 100%;
  width: 100%;
  display: table;
}
section.landing .content p {
  color: white;
  font-size: 25px;
  animation: 1s ease-out 0s normal forwards 1 anim_case_heading_large;
  -ms-animation: 1s ease-out 0s normal forwards 1 anim_case_heading_large;
  -webkit-animation: 1s ease-out 0s normal forwards 1 anim_case_heading_large;
  -moz-animation: 1s ease-out 0s normal forwards 1 anim_case_heading_large;
  transform: translateY(-100px);
  -ms-transform: translateY(-100px);
  -webkit-transform: translateY(-100px);
  -moz-transform: translateY(-100px);
}
section.landing .content h1 {
  animation: 1s ease-out 0s normal forwards 1 anim_case_heading_small;
  -ms-animation: 1s ease-out 0s normal forwards 1 anim_case_heading_small;
  -webkit-animation: 1s ease-out 0s normal forwards 1 anim_case_heading_small;
  -moz-animation: 1s ease-out 0s normal forwards 1 anim_case_heading_small;
  transform: translateY(200px);
  -ms-transform: translateY(200px);
  -webkit-transform: translateY(200px);
  -moz-transform: translateY(200px);
}
section.landing .content h4 {
  animation: 1s ease-out 0s normal forwards 1 anim_case_heading_large;
  -ms-animation: 1s ease-out 0s normal forwards 1 anim_case_heading_large;
  -webkit-animation: 1s ease-out 0s normal forwards 1 anim_case_heading_large;
  -moz-animation: 1s ease-out 0s normal forwards 1 anim_case_heading_large;
  transform: translateY(-100px);
  -ms-transform: translateY(-100px);
  -webkit-transform: translateY(-100px);
  -moz-transform: translateY(-100px);
}
section.bigpicture,
section.picture {
  background-attachment: fixed;
  background-position: 50% 0;
  background-size: cover;
  height: 600px;
  overflow: hidden;
  position: relative;
}
section.bigpicture .parallax-overlay,
section.picture .parallax-overlay {
  height: 100%;
  width: 100%;
  background-color: rgba(0,0,0,0.8);
}
section.picture {
  height: auto;
  overflow: visible;
}
section .services {
  padding-left: 30px;
}
section .services i {
  color: #444;
  margin-right: 5px;
}
section .content {
  padding: 80px 20px;
}
section.question {
  background-color: #222222;
}
span.line {
  background-color: #222222;
  display: block;
  height: 1px;
  margin: 50px auto;
  width: 80%;
}
span.line.small {
  background-color: #e6e6e6;
  margin-top: 10px;
  margin-bottom: 10px;
}
span.line.neg {
  background-color: #ffffff;
}
.displayTable {
  width: 100%;
  height: 100%;
  display: table;
}
.sectionArea {
  position: relative;
  color: #444;
  background-color: #e6e6e6;
  padding-top: 25px;
  padding-bottom: 25px;
  z-index: 1000;
}
.sectionArea .arrow {
  margin-top: -35px;
  width: 25px;
  height: 25px;
  background-color: #e6e6e6;
  position: absolute;
  transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  left: 50%;
}
.sectionArea .closeSection {
  position: absolute;
  right: 0;
  top: 43px;
  box-shadow: 0 6px 12px rgba(0,0,0,0.1176);
  -moz-box-shadow: 0 6px 12px rgba(0,0,0,0.1176);
  -webkit-box-shadow: 0 6px 12px rgba(0,0,0,0.1176);
  cursor: pointer;
  width: 40px;
  height: 40px;
  overflow: hidden;
  background-color: white;
  color: #444;
  text-align: left;
  white-space: nowrap;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
}
.sectionArea .closeSection .desc {
  padding-top: 10px;
}
.sectionArea .closeSection .icon {
  margin-left: 11px;
  float: left;
}
.sectionArea .closeSection .icon i {
  font-size: 25px;
  margin-top: 7px;
  margin-right: 15px;
}
.sectionArea .closeSection:hover {
  width: 130px;
}
.sectionArea h1 {
  padding: 0;
  margin: 0;
  color: white;
  font-family: 'Montserrat';
  font-weight: 600;
  margin-bottom: 10px;
}
@-ms-keyframes anim_case_heading_small {
  0% {
    opacity: 0;
    -ms-transform: translateY(40px);
  }
  40% {
    opacity: 0;
  }
  100% {
    opacity: 1;
    -ms-transform: translateY(0px);
  }
}
@-webkit-keyframes anim_case_heading_small {
  0% {
    opacity: 0;
    -webkit-transform: translateY(40px);
  }
  40% {
    opacity: 0;
  }
  100% {
    opacity: 1;
    -webkit-transform: translateY(0px);
  }
}
@-moz-keyframes anim_case_heading_small {
  0% {
    opacity: 0;
    -moz-transform: translateY(40px);
  }
  40% {
    opacity: 0;
  }
  100% {
    opacity: 1;
    -moz-transform: translateY(0px);
  }
}
@keyframes anim_case_heading_small {
  0% {
    opacity: 0;
    transform: translateY(40px);
  }
  40% {
    opacity: 0;
  }
  100% {
    opacity: 1;
    transform: translateY(0px);
  }
}
@-ms-keyframes anim_case_heading_large {
  0% {
    opacity: 0;
    -ms-transform: translateY(-60px);
  }
  40% {
    opacity: 0;
  }
  100% {
    opacity: 1;
    -ms-transform: translateY(0px);
  }
}
@-webkit-keyframes anim_case_heading_large {
  0% {
    opacity: 0;
    -webkit-transform: translateY(-60px);
  }
  40% {
    opacity: 0;
  }
  100% {
    opacity: 1;
    -webkit-transform: translateY(0px);
  }
}
@-moz-keyframes anim_case_heading_large {
  0% {
    opacity: 0;
    -moz-transform: translateY(-60px);
  }
  40% {
    opacity: 0;
  }
  100% {
    opacity: 1;
    -moz-transform: translateY(0px);
  }
}
@keyframes anim_case_heading_large {
  0% {
    opacity: 0;
    transform: translateY(-60px);
  }
  40% {
    opacity: 0;
  }
  100% {
    opacity: 1;
    transform: translateY(0px);
  }
}
@media (max-width: 992px) {
  header {
    overflow: hidden;
  }
  header [class*="col-"] {
    display: none;
  }
  header .openMobileNav {
    display: block;
    z-index: 1000;
  }
}
@media (max-width: 700px) {
  h1 {
    font-size: 35px;
  }
  h2 {
    font-size: 25px;
  }
}
@media (max-width: 385px) {
  h1 {
    font-size: 17px;
  }
  h2 {
    font-size: 13px;
  }
  .gf_image {
    width: 270px;
    height: 270px;
  }
  h3 {
    font-size: 12px;
  }
  .shape {
    width: 58px;
    height: 58px;
    font-size: 30px;
    line-height: 57px;
  }
}
@media (max-width: 480px) {
  h1 {
    font-size: 17px;
  }
  h2 {
    font-size: 14px;
  }
  h3 {
    font-size: 13px;
  }
}
<div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>A PHP Error was encountered</h4>

<p>Severity: 8192</p>
<p>Message:  str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated</p>
<p>Filename: core/Output.php</p>
<p>Line Number: 366</p>

</div>