main.css

body {
    background-color: #c6d7de;
    font-family: 'Montserrat';
    padding: 3em;
}

#v0 {
    position: fixed;
    bottom: 0;
    right: 0;
    width: 70%;
}

#set-height {
    display: block;
}

section {
    z-index: 1;
    position: relative;
}

.content {
    position: sticky;
    position: -webkit-sticky;
    width: 100%;
    top: 33.3%;
}

h1 {
    font-size: 3em;
    background: #fff;
    display: inline-block;
    padding: 10px 15px;
    border-radius: 5px;
    margin: 0;
}
p { font-size: 1.5em; }

section:nth-of-type(1) {
    height: 1200px;
}
section:nth-of-type(2) {
    height: 1200px;
}
section:nth-of-type(3) {
    height: 1200px;
}
section:nth-of-type(4) {
    height: 1000px;
}
section:nth-of-type(5) {
    height: 4000px;
}

.entered {
	-webkit-animation: text-focus-in 1s cubic-bezier(0.550, 0.085, 0.680, 0.530) both;
	        animation: text-focus-in 1s cubic-bezier(0.550, 0.085, 0.680, 0.530) both;
}

/* ----------------------------------------------
 * Generated by Animista on 2018-7-4 16:24:12
 * w: http://animista.net, t: @cssanimista
 * ---------------------------------------------- */

/**
 * ----------------------------------------
 * animation text-focus-in
 * ----------------------------------------
 */
 @-webkit-keyframes text-focus-in {
    0% {
      -webkit-filter: blur(12px);
              filter: blur(12px);
      opacity: 0;
    }
    100% {
      -webkit-filter: blur(0px);
              filter: blur(0px);
      opacity: 1;
    }
  }
  @keyframes text-focus-in {
    0% {
      -webkit-filter: blur(12px);
              filter: blur(12px);
      opacity: 0;
    }
    100% {
      -webkit-filter: blur(0px);
              filter: blur(0px);
      opacity: 1;
    }
  }