.cont{
width: 500px;
height: 200px;
background: linear-gradient(#78C9DB 70%,#0acf00 0%);
background-size: 100%  20px;
}

.cont{
width:500px;
height:200px;
background:linear-gradient(45deg,#78C9DB 50%,#0acf00 50%);
background-size:30px 30px;
}

.cont{
width:500px;
height:200px;
background:linear-gradient(-45deg,#0acf00 50%,#78C9DB 50%);
background-size:30px 100%;
}

.cont{
width:500px;
height:200px;
background:linear-gradient(-45deg,#0acf00 25%,#78C9DB 0,#78C9DB 50%,#0acf00 0,#0acf00 75%,#78C9DB 0);
/*background:repeating-linear-gradient(-45deg,#0acf00,#0acf00 15px,#78C9DB 0,#78C9DB 30px);*/效果相同 
background-size: 30px 30px;
}

.cont{
width:500px;
height:200px;
background:#fff repeating-linear-gradient(30deg,rgba(0,0,0,.5),rgba(0,0,0,.5)15px,transparent 0,transparent 30px);
}

.cont{
width:500px;
height:200px;
background:#fff;
background: linear-gradient(90deg,rgba(100,0,0,.5) 50%,transparent 0),linear-gradient(rgba(100,0,0,.5) 50%,transparent 0);
background-size: 30px 30px;
}

.cont{
margin:50px;
width:500px;
height:200px;
background:#a95f44;
background-image:radial-gradient(#fff 30%,transparent 0),radial-gradient(#fff 30%,transparent 0);
background-size:20px 20px;
background-position:0 0,10px 10px;  // 必须是background-size尺寸的1/2
}

.cont{
width:500px;
height:200px;
background: #fff;
background-image:linear-gradient(45deg,#a95f44  26%,transparent 0,transparent 75%,#a95f44  0),
linear-gradient(45deg,#a95f44  26%,transparent 0,transparent 75%,#a95f44 0);
background-size:30px 30px;
background-position:0 0,15px 15px;
}