*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Arial;
}

body{
background:#042354;
display:flex;
justify-content:center;
align-items:center;
height:100vh;
}

.container{
background:white;
padding:40px;
border-radius:12px;
text-align:center;
width:300px;
}

h2{
margin-bottom:20px;
}

/* GAUGE */

.circle{
position:relative;
width:200px;
height:200px;
border-radius:50%;
background:#eee;
margin:auto;
overflow:hidden;
}

.mask, .fill{
position:absolute;
width:100%;
height:100%;
border-radius:50%;
}

.mask{
clip:rect(0px,200px,200px,100px);
}

.fill{
background:#2563eb;
clip:rect(0px,100px,200px,0px);
transform:rotate(0deg);
transition:transform 0.2s linear;
}

.inside{
position:absolute;
top:50%;
left:50%;
transform:translate(-50%, -50%);
text-align:center;
}

#speed{
font-size:32px;
font-weight:bold;
}

button{
margin-top:20px;
padding:10px 20px;
border:none;
background:#2563eb;
color:white;
border-radius:6px;
cursor:pointer;
}

button:hover{
background:#1e40af;
}