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@charset "utf-8";
.web-app {
display: inline-block;
border: 1px solid #f0f0f0;
text-align: center;
}
#com {
font-size: 60px;
}
button {
width: 60px;
font-size: 14px;
}
.web-app button:last-child {
width: 80px;
}