body {
    background-color: #000;
    color: #fff;
    font-family: Tahoma, Arial, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    position: relative;
    height: 100vh;
}

h1 {
    margin-left: 1em;
}

.block {
    position: absolute;
    width: 400px;
    height: 400px;
    border: 3px dotted red;
    padding: 20px;
    box-sizing: border-box;
}

.block-title {
    color: yellow;
    font-style: italic;
    margin-top: 0;
}
.block-red {
    background-color: red;
    top: 50px;
    left: 40px;
    z-index: 3;
}

.block-green {
    background-color: green;
    top: 0px;
    left: 400px;
    z-index: 2;
}

.block-blue {
    background-color: blue;
    top: 210px;
    left: 350px;
    z-index: 4;
}

.block-red p {
    width: 250px;
    text-align: justify;
}

.block-red p::first-line {
    text-indent: 2em;
}

.block-blue ul {
    list-style-type: square;
}

.block-green ol {
    list-style-type: upper-roman;
}