CSS - AutoWidth

Auto width;

by JSDavi

HTML

<div class="content">
    <div class="node"></div>
    <div class="father">
        <div class="child">11111-22222-33333</div>
    </div>
</div>

CSS

.content {
    width: 100%;
    height: 100%;
    background-color: grey;
}
.node {
    width: 100%;
    height: 40px;
}
.father {
    width: auto;
    display: inline-block;
    background-color: cyan;
}
.child {
    background-color: green;
    color: #fff;
    padding: 10px;
    border: 2px solid #000;
    margin: 15px;
}