header{
    position: relative;
}
header h3{
    z-index: 1;
}
header h3:before{
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background: #321555c4;
    top: 0;
    left: 0;
    z-index: -1;
}
.back{
    position: fixed;
    z-index: 4;
    top: 24px;
    left: 5%;
    height: 52px;
    width: 52px;
    border: 1px solid #fff;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.8);
    -webkit-transition: all 0.2s;
    -moz-transition: all 0.2s;
    transition: all 0.2s;
}
.back:before{
    content: "";
    position: absolute;
    width: 2px;
    height: 18px;
    background: #fff;
    rotate: 45deg;
    left: 23px;
    top: 11px;
}
.back:after{
    content: "";
    position: absolute;
    width: 2px;
    height: 18px;
    background: #fff;
    rotate: -45deg;
    left: 23px;
    top: 23px;
}
.main{
    line-height: initial;
}
.main > p{
    font-size: 2.5rem;
    margin-bottom: 6rem;
    font-weight: 600;
}
.blog-content > *{
    font-size: 2.5rem;
    line-height: 4rem;
    font-weight: 300;
}
.main img{
    width: 100%;
    margin: 3rem 0;
    border-radius: 2rem;
    box-shadow: 25px 25px 41px #969696, -25px -25px 41px #fff;
}
@media only screen and (max-width: 600px){
    header h3{
        font-size: 2rem;
        max-width: 80%;
        line-height: 2.5rem;
    }
}