diff --git a/btn.css b/btn.css
deleted file mode 100644
index dcdd4fa..0000000
--- a/btn.css
+++ /dev/null
@@ -1,99 +0,0 @@
-.btn{
- text-align:center;
- margin:0 auto;
-}
-.btn-square {
-  display: inline-block;
-  padding: 0.5em 1em;
-  text-decoration: none;
-  background:#FF4500;/*????*/
-  color: #FFF;
-  border-bottom: solid 4px #800000;
-  border-radius: 3px;
-}
-.btn-square:active {
-  /*?????????*/
-  -webkit-transform: translateY(4px);
-  transform: translateY(4px);/*????*/
-  border-bottom: none;/*????*/
-}
-
-.btn-circle-border-simple4:hover {
-  background: #CD5C5C;
-}
-
-.btn-circle-border-simple1 {
-  display: inline-block;
-  text-decoration: none;
-  color: #9933FF;
-  width: 100px;
-  height: 100px;
-  line-height: 100px;
-  border-radius: 50%;
-  border: solid 2px #9933FF;
-  text-align: center;
-  overflow: hidden;
-  font-weight: bold;
-  transition: .4s;
-}
-
-.btn-circle-border-simple1:hover {
-  background: #CC99FF;
-}
-
-.btn-circle-border-simple2 {
-  display: inline-block;
-  text-decoration: none;
-  color: #003366;
-  width: 100px;
-  height: 100px;
-  line-height: 100px;
-  border-radius: 50%;
-  border: solid 2px #003366;
-  text-align: center;
-  overflow: hidden;
-  font-weight: bold;
-  transition: .4s;
-}
-
-.btn-circle-border-simple2:hover {
-  background:#3399FF ;
-}
-
-.btn-circle-border-simple3 {
-  display: inline-block;
-  text-decoration: none;
-  color:#00CC00 ;
-  width: 100px;
-  height: 100px;
-  line-height: 100px;
-  border-radius: 50%;
-  border: solid 2px #00CC00;
-  text-align: center;
-  overflow: hidden;
-  font-weight: bold;
-  transition: .4s;
-}
-
-.btn-circle-border-simple3:hover {
-  background: #66FF66;
-}
-
-.btn-circle-border-simple4 {
-  display: inline-block;
-  text-decoration: none;
-  color:#8B0000 ;
-  width: 100px;
-  height: 100px;
-  line-height: 100px;
-  border-radius: 50%;
-  border: solid 2px #8B0000;
-  text-align: center;
-  overflow: hidden;
-  font-weight: bold;
-  transition: .4s;
-}
-
-.btn-circle-border-simple4:hover {
-  background: #CD5C5C;
-}