btcpayserver/BTCPayServer/wwwroot/light-pos/styles/main.css

[v-cloak] > * {
    display: none
}

[v-cloak]::before {
    content: "loading…"
}

.l-pos-wrapper {
    max-width: 450px;
    margin: auto;
}

.l-pos-header {
    color: #fff;
}

.l-pos-display {
    font-size: 1.4rem;
    overflow: hidden;
}
.l-pos-display span {
    display: inline-block;
    height: 80px;
    line-height: 80px;
}

.l-pos-keypad {
    margin-left: 2%;
}

.l-pos-keypad .btn {
    width: 32%;
    margin-right: 1%;
    margin-bottom: 1%;
    border-radius: 0;
    padding-top: 4%;
    padding-bottom: 4%;
    font-weight: bold;
    font-size: 1.3rem;
}

.l-pos-controls .btn {
    width: 47%;
    border-radius: 0;
    margin-right: 0%;
    margin-left: 2%;
    margin-bottom: 1%;
}

.logo {
    height: 40px;
}