頁面布局中的模塊內容有不少是帶有按鈕的，譬如是了解更多的按鈕、表單提交的按鈕等。按鈕有引導用戶點擊、激發用戶點擊行為等的作用，例如下單購買商品或者跳轉鏈接或者展開更多內容以達到了解更多的詳情的目的。與頁面風格協調的按鈕設計可以增加頁面的美觀效果和更易于吸引客戶的注意力，為了提高用戶對關于頁面操作的體驗度，還可以在按鈕的制作中加入一些動態效果。例如，當鼠標經過按鈕的時候，可以適當添加一些動態效果或者加入背景的填充，下面是可以在日常工作中需要用css3制作鼠標經過頁面按鈕能用到的動畫效果。
如下圖按鈕效果一，鼠標經過會有微微下陷的效果：

Html:
<div class="btn">
<a href="">
<span>了解更多</span>
</a>
</div>
CSS:
.i-title .btn{
text-align: center;
margin-top: 50px;
}
.i-title .btn a{
background: none;
    border: none;
    display: inline-block;
    text-align: center;
    font-size: 14px;
    color: #FFFFFF;
    position: relative;
    padding: 17px 35px;
    overflow: hidden;
    font-weight: 400;
    cursor: pointer;
    -moz-transition: all 400ms ease-in-out;
    -o-transition: all 400ms ease-in-out;
    -webkit-transition: all 400ms ease-in-out;
    transition: all 400ms ease-in-out;
}
.i-title .btn a:before{
content: "";
    position: absolute;
    z-index: 50;
    -moz-transition: all 1.4s ease;
    -o-transition: all 1.4s ease;
    -webkit-transition: all 1.4s ease;
    transition: all 1.4s ease;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(27,57,82,0.3);
    -moz-transform: scale(1.02, 1.02);
    -ms-transform: scale(1.02, 1.02);
    -webkit-transform: scale(1.02, 1.02);
    transform: scale(1.02, 1.02);
    -moz-transition: all 400ms ease-in-out;
    -o-transition: all 400ms ease-in-out;
    -webkit-transition: all 400ms ease-in-out;
    transition: all 400ms ease-in-out;
}
.i-title .btn a:after{
content: "";
    display: block;
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    bottom: 2px;
    background-color: #1b3952;
    z-index: 100;
    -moz-transition: all 400ms ease-in-out;
    -o-transition: all 400ms ease-in-out;
    -webkit-transition: all 400ms ease-in-out;
    transition: all 400ms ease-in-out;
}
.i-title .btn a span{
position: relative;
    z-index: 300;
    -moz-transition: all 400ms ease-in-out;
    -o-transition: all 400ms ease-in-out;
    -webkit-transition: all 400ms ease-in-out;
    transition: all 400ms ease-in-out;
    padding-right: 30px;
    background: url(../images/img16.png) center right no-repeat;
}
.i-title .btn a:hover span{
background: url(../images/img17.png) center right no-repeat;
-moz-transition: all 400ms ease-in-out;
    -o-transition: all 400ms ease-in-out;
    -webkit-transition: all 400ms ease-in-out;
    transition: all 400ms ease-in-out;
}
 
如下圖按鈕效果二，鼠標經過會有背景填充的動畫效果：

Html:
<div class="xbtn">
<a href="">
了解更多
<span></span>
</a>
</div>
Css:
.xbtn a{
position: relative;
    display: block;
margin: 20px auto;
text-align: center;    
width: 150px;
    height: 50px;
    line-height: 50px;
    max-width: 250px;
    color: #FFFFFF;
    text-transform: uppercase;
    overflow: hidden;
    border: 1px solid currentColor;
}
.xbtn a:hover{
color: #1b3952;
}
.xbtn a span{
position: absolute;
    display: block;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: #FFFFFF;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    -webkit-transition: width 0.4s, height 0.4s;
    transition: width 0.4s, height 0.4s;
    z-index: -1;
}
.xbtn a:hover span {
    width: 320px;
    height: 320px;
}