* {
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
    background: #eee;
    padding: 30px;
}

button {
    padding: 10px 30px;
    background: tomato;
    color: #fff;
    border: 0;
    border-radius: 5px;
}

[class^="element"] {
    margin: 10px 0;
    background: #fff;
    padding: 10px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

[class^="element"] div {
    padding: 10px;
    border: 1px solid #ddd;
}

.element1-content input {
    border: 2px solid #222;
    padding: 10px;
}

.element2-content strong {
    display: inline-block;
    padding: 20px 30px;
    color: #fff;
    margin: 2px;
    border-radius: 2px;
    text-shadow: 0 0 1px #000, 0 0 1px #000, 0 0 1px #000;
}

.element3-content {
    font-weight: bold;
    padding: 10px;
    line-height: 1.5;
}