.button{display: block; margin: -178px auto 120px auto; text-align: center;width: 640px; height: 60px; padding:0;}

.button .button1{ display: inline-block; width: 310px; height: 60px; margin: 0; padding:0;}
.button .button1 a{ display: block;padding: 0;width: 310px; height: 60px;}

.button .button2{ display: inline-block; width: 310px; height: 60px; margin: 0 0 0 10px;padding:0;}
.button .button2 a{ display: block;padding: 0;width: 310px; height: 60px;}