HTML:
<div class="parent">
<div class="left-child">
<div><img src="logo.jpg" alt="logo" /></div>
</div>
<div class="right-child">
<form action="#">
<input type="text" value="search1" /><br/>
<input type="text" value="search2" /><br/>
<input type="text" value="search3" />
</form>
</div>
</div>
CSS:
.parent {
height: 400px;
width: 100%;
position: relative;
}
.left-child {
width: 50%;
height: 100%;
display: table;
position: absolute;
}
.left-child div {
display: table-cell;
vertical-align: middle;
text-align: center;
}
.right-child {
width: 50%;
height: 100%;
display: table;
position: absolute;
left: 50%;
}
.right-child form {
display: table-cell;
vertical-align: middle;
text-align: center;
}
クレジット
フィドル