.calcbutton {
    width: 23vw;
    height: 23vw;
    background-color: lightblue;
    color: black;
    font-size: 7vw;
    text-align: center;
    padding: 0;                   /* to allow iPhone to center text in button */
    touch-action: manipulation;   /* to disable double-tab zoom on buttons */
}

.disable-select {
    user-select: none; /* supported by Chrome and Opera */
   -webkit-user-select: none; /* Safari */
   -khtml-user-select: none; /* Konqueror HTML */
   -moz-user-select: none; /* Firefox */
   -ms-user-select: none; /* Internet Explorer/Edge */
}

#mydisplay {
    width: 20vw;
    height: 10vw;
    font-size: 7vw;
    text-align: center;
    border-style: solid;
    border-width: 1px;
}

h1 {
    text-align: center;
}

div {
    text-align: center;
    margin-bottom: 0px;
}

label {
    height: 10vw;
    font-size: 7vw;
    min-height: 10vw;
}

table {
    margin-left: auto;
    margin-right: auto;
}

body {
    margin: auto;
    text-align: center;
    touch-action: pay-y;  /* iPhone prevent zooming, doesn't work! */
}

.right {
    text-align: right;
}
.left {
    text-align: left;
}

.radioinput {
    font-size: 3vw;
    vertical-align: middle;
    height: 2vw;
    width: 2vw;
}

.radiolabel {
    font-size: 3vw;
    text-align: left;
    width: 7%;
    height: 3%;
    min-height: 3vw;
}