body {
    background: #262628;
    color: #fff;
    font-size: 2rem;
}

/* ====================================== */

.block {
    position: fixed;
    background-color: #fff;
    border-radius: 5px;
    min-height: 100px;
    bottom: 100px;
    left: 50%;
    right: 50px;
}

.block__circle {
    position: relative;
    background-color: #ff0000;
    border-radius: 100%;
    width: 100px;
    height: 100px;
    left: 20%;
    bottom: 50px;
}