线性渐变css

#grad {
   background: -webkit-linear-gradient(red, blue); /* Safari 5.1 - 6.0 */   
   background: -o-linear-gradient(red, blue); /* Opera 11.1 - 12.0 */   
   background: -moz-linear-gradient(red, blue); /* Firefox 3.6 - 15 */  
   background: linear-gradient(red, blue); /* 标准的语法 */ 
}

#grad {
   background: -webkit-linear-gradient(left, red , blue); /* Safari 5.1 - 6.0 */   
   background: -o-linear-gradient(right, red, blue); /* Opera 11.1 - 12.0 */   
   background: -moz-linear-gradient(right, red, blue); /* Firefox 3.6 - 15 */   
   background: linear-gradient(to right, red , blue); /* 标准的语法 */ 
}

#grad {   
    background: -webkit-radial-gradient(red 5%, green); /* Safari 5.1 - 6.0 */   
    background: -o-radial-gradient(red 5%, green); /* Opera 11.6 - 12.0 */   
    background: -moz-radial-gradient(red 5%, green); /* Firefox 3.6 - 15 */   
    background: radial-gradient(red 5%, green); /* 标准的语法 */ 
}