Question: I have such code:

```
<div style="width:500; height:500;">
    <input type="button"/>
</div>

```

how to fit the button to the div's sizes?
if its imposible ny css, i can use js,jquery

Answer: 
Make sure you give your width and height of parent container a unit suffix on the value:

```
<div style="width:500px;height:500px;">
    <input type="button" style="width:100%;height:100%;"/>
</div>

```
You can use css for this

```
<input type="button" style="width: 500px; height: 500px;" />

```

Better use a class for that

```
.inpbutton
{
    width: 500px;
    height: 500px;
}

<input type="button" class="inpbutton" />

```