.a {
width: 200px;
border: 1px solid;
height: 40px;
float: left;
}
.b,.c {
border: 1px solid;
width: 40px;
height: 40px;
float: left;
}
<div class="a">test 123456</div>
<div class="b">123</div>
<div class="c">123</div>
.a {
width: 200px;
border: 1px solid;
height: 40px;
float: left;
}
.b,.c {
border: 1px solid;
width: 40px;
height: 40px;
float: left;
}
<span class="a">test 12345</span>
<span class="b">123</span>
<span class="c">123</span>