.err_top {position: relative; padding: 30% 0 20%; text-align: center; overflow: hidden;}
.err_top:before {content:''; position: absolute; width: 2000px; height: 2000px; bottom: 30px; left: 50%; margin-top: -60vw; background-color: #e6006b; border-radius: 50%; transform: translateX(-50%);}
.err_top img {position: relative; width: 30%; max-width: 140px;}

.err_cont {text-align: center; padding: 0 4%;}
.err_cont h1 {font-size: 2rem; font-weight: 700; word-break: keep-all;}
.err_cont p {padding-top: 10px; font-size: 1.4rem; word-break: keep-all;}

.btn_box {padding-top: 40px;}
.btn_big {margin-bottom: 10px;}


@media all and (min-width: 670px) {
    .err_top {padding: 120px 0 70px}
    .err_top:before {transform: translate(-50%, -50%) scale(2);}
}