a:link {color : blue; }
a:visited {color : purple; }
img  {
vertical-align: top;
}
.myoldbutton {
color: black; 
border: double 10px #0000ff;
background-color: yellow;
}
.mybutton {
  display: inline-block;
  padding: 15px 25px;
  font-size: 24px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  outline: none;
  color: #fff;
  background-color: #4CAF50;
  border: none;
  border-radius: 15px;
  box-shadow: 0 9px #999;
}
.mybutton:hover {background-color: #3e8e41}
.mybutton:active {
  background-color: #3e8e41;
  box-shadow: 0 5px #666;
  transform: translateY(4px);
}

.mybutton_yellow {
  display: inline-block;
  padding: 15px 25px;
  font-size: 24px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  outline: none;
  color: #fff;
  background-color: #840;
  border: none;
  border-radius: 15px;
  box-shadow: 0 9px #999;
}
.mybutton_yellow:hover {background-color: #f80;}
.mybutton_yellow:active {
  background-color: #f80;
  box-shadow: 0 5px #666;
  transform: translateY(4px);
}


.mybutton_blue {
  display: inline-block;
  padding: 15px 25px;
  font-size: 24px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  outline: none;
  color: #fff;
  background-color: #048;
  border: none;
  border-radius: 15px;
  box-shadow: 0 9px #999;
}
.mybutton_blue:hover {background-color: #08f;}
.mybutton_blue:active {
  background-color: #f80;
  box-shadow: 0 5px #666;
  transform: translateY(4px);
}