如何让图片全显示，并且能设置大小

Question

.input_button{
            border: 0;
            background-image: url(search-button.png);
            width: 29px;
            height: 29px;
            float: left;
        }

老师这图片，宽高都固定px的，要是我把宽高设置大一点，就会出现好多张图片，怎么让他只显示一张并且能设置大小

Answer 1

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Answer 2

 background: url(search-button.png) no-repeat center;  background-size:100% 100%;你可以查下background的属性，可以设置很多属性的。no-repeat表示不重复出现图片；center是居中显示；background-size可以设置图片大小，可以用%，px等；具体属性还是查清楚background来看好点。