.LCD {
background: #EEF;
color: black;
font-weight:bold;
font-size:14px;
height:40px;
width:50%;
text-align:right;
padding-right: 5px;
    }
input {
font-weight:bold;
font-size:20px;
width:30px;
}
.value {
color:blue;
}
.action {
color:green;
}
.rst {
color:red;
}
input[type="button"], input[type="reset"] {
    user-select: none;
    text-align: center;
    cursor: pointer;
    background-color: #efefef;
    padding: 1px 6px;
    border: #767676 1px solid;
    margin-bottom:3px;
    border-radius: 2px;
}
input[type="button"]:hover, input[type="reset"]:hover, 
input[type="button"]:focus, input[type="reset"]:focus {
    background-color: #e5e5e5;
    outline:none;
}