button1 {

border: 2px solid black;
background: lavender;
margin:  1px;
padding: 3px;

}

button1:hover {

transition: 8000ms linear;
background-color: lightblue;

}

.bblack1 { border: 1px solid black; } .bblack2 { border: 2px solid black; } .bblack3 { border: 3px solid black; }