* {
padding: 0;
margin: 0;
box-sizing: border-box;
}
body {
display: flex;
justify-content: center;
align-items: center;
background: linear-gradient(to right, #21d4fd, #b721ff);
}
section {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
}
section h1 {
font-size: 4rem;
font-family: sans-serif;
margin: 20px;
color: #fff;
text-transform: uppercase;
}
section #timer {
font-size: 4rem;
margin: 20px;
}
section button {
background: transparent;
border: none;
padding: 10px 20px;
}
button {
margin: 10px;
color: #fff;
width: 6rem;
cursor: pointer;
}
#start-button {
background: #71e027;
}
#stop-button {
background: crimson;
}
#reset-button {
background: darkblue;
}