* {
    margin: 0;
    padding: 0;
}

.orange {
    background-color: orange;
}

#blue {
    background-color: lightblue;
}

.fs {
    font-size: 30px;
}
.fw {
    font-weight: 1000;
}
.fc {
    color: #eee;
}
.ff {
    font-family: sans-serif;
}

.box-container {
    background-color: aquamarine;
    padding-top: 50px;
}

.box1 {
    margin: 10px 20px;
    background-color: red;
    border: 10px solid black;
}

.box2 {
    padding: 20px 10px 30px 40px;
    background-color: green;
}
.box3 {
    margin: 20px;
    padding: 20px;
    background-color: yellow;
    border-radius: 10px;
}

.display-container {
    background-color: lightgreen;
}

.block {
    display: block;
    background-color: yellow;
    width: 300px;
    text-align: center;
}

.inline {
    display: inline;
    background-color: orange;
}

.inline-block {
    display: inline-block;
    background-color: yellowgreen;
    width: 300px;
    text-align: center;
}

.hidden {
    display: none;
}