Why does the background image not display properly?

Question

css代码：

.header{

width: 1226px;

height: 100px;

margin: 0px auto;

line-height: 90px;

padding-left: 40px;

}

.content{

width: 100%;

height: 580px;

background: url(../img/login.png);

}

html代码：

<div class="content">

<div class="login_content">

<div class="login_form">

</div>

</div>

</div>

Answer 1