body {
    background: #2b2a2a;
    color: #fff;
    font-size: 36px;
}

.block  {
    border-radius: 5px;
    max-height: 100px;
    height: 100%;
    background: #e1c1c1;
    position: fixed;
    left: 50vw;
    right: 50px;
    bottom: 100px;
}

.circle {
    background: red;
    position: relative;
    top: -50%;
    left: 100px;
    width: 100px;
    height: 100px;
    border-radius: 100%;
}