body { background: url(back-haikei.jpg); background-size: cover; margin-left: 2em; margin-right: 4em; margin-top: 4em}
.symptop{ width:1000px; height:180px; background-image:url(back3.jpg); }

.button { background: 0; fontcolor: white; }

a:link { color: black; }
a:hover { color: darkorange; }