body{
font-family: Arial, sans-serif;
background:#167a7a;
margin:0;
display:flex;
flex-direction:column;
justify-content:center;
align-items:center;
height:100vh;
}

#topText{
text-align:center;
color:white;
margin-bottom:40px;
}

#topText h1{
margin:0;
font-size:42px;
}

#topText p{
margin:5px;
font-size:16px;
opacity:0.9;
}

#app{
background:#1f8fa0;
padding:40px;
border-radius:10px;
text-align:center;
width:400px;
}

#timer{
font-size:48px;
margin:30px 0;
}

#progressContainer{
width:100%;
height:12px;
background:#d6d6d6;
border-radius:6px;
overflow:hidden;
margin:15px 0 25px 0;
}

#progressBar{
height:100%;
width:0%;
background:#4CAF50;
}

button{
padding:10px 18px;
margin:6px;
font-size:16px;
border:none;
border-radius:6px;
background:#3b4db2;
color:white;
cursor:pointer;
}

button:hover{
background:#2f3f95;
}