Styling.css

html, body{
  background:white;
  height:100%;
  padding:0;
  margin:0;
}

.image-content{
  background:yellow;
  float:left;
  width:50%;
  height:100%;
  position:relative;
}

.text-content{
  background:green;
  float:left;
  width:50%;
  height:100%;
  position:relative;
}

iframe {
  height: auto;
  width: 100%;
  overflow: hidden;
}

.iframe-container {
  overflow: hidden;
  padding-top: 75%;
  position: relative;
}

.iframe-container iframe {
   border: 0;
   height: 100%;
   left: 0;
   position: absolute;
   top: 0;
   width: 100%;
}

/* Start of button styling */

.form-switch {


  position: relative;
  display: inline-block;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;

  font-size: 20px;

  /*margin-bottom: 20px;*/

  margin: 20px;
}
.form-switch i {
  position: relative;
  display: inline-block;
  margin-right: .5rem;
  margin-left: 50px;
  width: 46px;
  height: 26px;
  background-color: #e6e6e6;
  border-radius: 23px;
  vertical-align: text-bottom;
  transition: all 0.3s linear;
}
.form-switch i::before {
  content: "";
  position: absolute;
  left: 0;
  width: 42px;
  height: 22px;
  background-color: #fff;
  border-radius: 11px;
  transform: translate3d(2px, 2px, 0) scale3d(1, 1, 1);
  transition: all 0.25s linear;
}
.form-switch i::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 22px;
  background-color: #fff;
  border-radius: 11px;
  box-shadow: 0 2px 2px rgba(0, 0, 0, 0.24);
  transform: translate3d(2px, 2px, 0);
  transition: all 0.2s ease-in-out;
}
.form-switch:active i::after {
  width: 28px;
  transform: translate3d(2px, 2px, 0);
}
.form-switch:active input:checked + i::after {
  transform: translate3d(16px, 2px, 0);
}
.form-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.form-switch input:checked + i {
  background-color: #4BD763;
}
.form-switch input:checked + i::before {
  transform: translate3d(18px, 2px, 0) scale3d(0, 0, 0);
}
.form-switch input:checked + i::after {
  transform: translate3d(22px, 2px, 0);
}