/* Reset rule */
* {
    margin:0; padding:0; border: 0; box-sizing: border-box;
}

body {
    background-color: lightgreen;
    padding-bottom: 500px;
}

h1 {
   text-align: center;
   font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
   color: darkred;
   padding: 8px;
   border: 3px solid yellow;
   border-bottom: 3px solid #0ee;
   margin: 30px auto;
   width: 80%;
   background-image: repeating-linear-gradient(#0ee, #0ee 25px, yellow 27px, yellow 52px);
   position: relative;
   margin-bottom: 75px;
}

h1 span {
    font-weight: bolder;
    font-family: monospace;
    color: hotpink;
    font-size: 600%;
    position: absolute;
    margin-left: -675px;
    margin-top: 1000px;
    letter-spacing: 10px;
}

a {
    position: absolute;
    top: 10px; left: 10px;
    background-color: palegoldenrod;
    border: 2px solid yellow;
    padding: 10px;
}

a:hover {
    background-color: whitesmoke;
    color: #044;
}

.square1, .square2 {
    width: 200px; height: 200px;
    border: 4px double #033;
    margin: 50px;
    display: inline;
    background-color: lightsalmon;
}

.square1 {
    /* I think this one doesn't work because it's being displayed as an inline element from the rule above. */
    transform: rotate(45deg);
}

.circle {
    width: 200px; height: 200px;
    border: 2px dotted #044;
    border-radius: 50%;
    background-color: orange;
    position: relative;
    bottom: -75px; left: 1000px;
}

.zebra-stripes {
    width: 400px; height: 200px;
    border: 4px dotted plum;
    border-radius: 20px;
    position: relative;
    bottom: 120px; left: 500px;
    background-image: repeating-linear-gradient(250deg, #eee, #eee 45px, #111 47px, #111 72px);
}

.triangle {
    width: 0;
    height: 0;
    border-left: 60px solid transparent;
    border-right: 60px solid transparent;
    border-bottom: 120px solid rosybrown;
    position: relative;
    bottom: 280px; left: 200px;
}

ul {
    font-size: 24px;
    font-family: fantasy;
    margin: 0 auto;
    display: inline-flex;
    border: 2px solid red;
    position: absolute;
    left: auto; right: auto;
}

li {
    margin: 50px;
    list-style-type: none;
    border: 2px solid black;
    padding: 20px;
    color: chartreuse;
    text-shadow: 2px 2px #111;
    background-color: cornflowerblue;
    border-radius: 15%;
}

.hover {
    width: 180px;
    height: 120px;
    border: 2px solid purple;
    background-color: #393939;
    margin: 0 auto;
    margin-bottom: 50px;
}

.hover:hover {
    background-color: aqua;
}

div p {
    color: fuchsia;
    text-align: center;
    line-height: 120px;
    font-weight: 600;
    font-size: 200%;
}