.kk:link, kk:visited {
  background-color: white;
  color: black;
  border: 2px solid green;
  padding: 10px 20px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
}
.kk:hover, kk:active {
  background-color: green;
  color: white;
}
.mk{
background-color:#002389;
color:white;
display:inline-block;
font-size:50px;
}
.mk:hover{
background-color:lightblue;
color: dark;
}
.line:hover,:active{
text-decoration: underline;
text-decoration: underline;
}

.bt{
  -webkit-margin-collapse: collapse;
  width: 100%;
}
div{
  text-decoration: none;
}