html {
   box-sizing: border-box;
   background: #ffc600;
   font-family: 'helvetica neue';
}

body {
   margin: 0;
}

*, *:before, *:after {
   box-sizing: inherit;
}

h1 {
   margin-top: 0;
}

.site-wrap {
   max-width: 700px;
   margin: 100px auto;
   background: white;
   padding: 40px;
   text-align: justify;
}

.align-left {
   float: left;
   margin-right: 20px;
}

.align-right {
   float: right;
   margin-left: 20px;
}

.slide-in {
   opacity: 0;
   transition: all .5s;
}

.align-left.slide-in {
   transform: translateX(-30%) scale(0.95);
}

.align-right.slide-in {
   transform: translateX(30%) scale(0.95);
}

.slide-in.active {
   opacity: 1;
   transform: translateX(0%) scale(1);
}