* {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
}
body {
    background-color: #eee;
}
.container {
    width: 650px;
    margin: 30px auto;
    box-shadow: 0 0 15px 0px #6c6c6ca8;
}
.container section {
    height: 400px;
    display: flex;
    justify-content: space-between;
    background-color: #fff;
}
.container section > div {
    width: 48%;
    height: 100%;
    overflow: hidden;
}
.container section > div img {
    max-height: 100%;
}
.container section .content {
    width: 50%;
    height: 100%;
    padding: 20px;
    padding-top: 0;
}
.container section .content h1 {
    font-size: 40px;
    font-family: monospace, 'Courier New', Courier;
    margin-bottom: 0;
}
.container section .content h1 + span {
    letter-spacing: 4px;
    color: #bbb;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.container section .content h1 + span + p {
    margin-top: 40px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #6d6d6d;
}
.container section .content .buy {
    margin-top: 40px;
    display: flex;
    justify-content: space-between;
}
.container section .content .buy div {
    position: relative;
    display: flex;
    border-radius: 50px;
    overflow: hidden;
}
.container section .content .buy span {
    font-size: 35px;
    font-family: monospace, 'Courier New', Courier;
}
.container section .content .buy button {
    background-color: rgba(0, 0, 0, 0);
    color: #fff;
    letter-spacing: 4px;
    padding: 13px 40px;
    border: 0;
    border-radius: 50px;
    cursor: pointer;
    position: relative;
    z-index: 2;
}
.container section .content .buy div > span, .container section .content .buy div > span + span {
    content: "";
    background-color: #3fffc2;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}
.container section .content .buy div > span + span {
    background-color: #1b2e28;
    width: 0%;
    z-index: 2;
    transform: rotate(25deg) scale(5);
    transition: width 0.8s;
}
.container section .content .buy div:hover > span + span{
    width: 100%;
}
@media(max-width: 720px) {
    .container {
        width: 88%;
        max-width: 350px;
    }
    .container section {
        width: 100%;
    }
    .container section div:first-of-type {
        display: none;
    }
    .container section .content {
        width: 100%;
    }
}