timer.css

body{
    background-color: rgb(78, 112, 184);
}

.Outer{
    display: flex;
    align-items: center;
    justify-content: center;
    top: 10%;
    position: absolute;
   
}
.wrapper{
    width: 1000px;
    height: 500px;
    background-color:rgba(4, 4, 39, 0.959);
    outline: 2px solid rgb(0, 0, 0);
    box-shadow: 10px 10px 15px  rgba(12, 23, 83, 0.959);
}
 
.heading{
    margin: 3px; 
    padding-top: 50px;   
    
}

.head{
    padding-top: 0;
    justify-content: space-evenly;
    align-items: center;
}

h1{
    font-size: 3rem;
    color: silver;
    font-weight: 1000;
    padding-bottom: 10px;   
    text-decoration: none;
    font-family: 'Pacifico', cursive;
}
a{
    text-decoration: none
}


.head{
    padding-top: 50px;
}    

#timer::after{
content: " ";
width: 20%;
height: 4px;
background-color: silver;
border-radius: 3px;
position: absolute;
top: 120px;  
right: 7%;
transform: translateX(-50%);
transition: linear 2s ease-in-out 0;
}

.timecont{
    position: relative;
    justify-content: center;
    align-items: center;
    top: 10%;
}
.timecont div{
    color:rgb(110, 136, 192) ;
    margin-left: 10px; 
    margin-right: auto;
    border-radius: 50%;
    height: 200px;
    width: 200px;
    border: 5px solid white;
    animation: time  5s ease-in-out infinite forwards;
}
hr{
    color: white;
    height: 4px;
}

@keyframes time{
    0%{
        border-color: yellow;
    }
    25%{
        border-color: red;

    }
    50%{
        border-color: blue;
    }
    75%{
        border-color: green;
    }
    100%{
        border-color: white;
    }
}

.timecont h5{
    font-size: 5rem;
}

.timecont h3{
    font-size: 1.5rem;
}
span{
    font-size: 60px;
    font-weight: 500;
    color: rgb(54, 80, 136) ;
}

.btn-wrap{
    position: relative;
    top: 15%;
    left: 60%;

}
button{
    
    text-transform: uppercase;
    height: 40px;
    width: 150px;
    border: 0;
    outline: 0;
    border-radius: 10px;
    margin: 10px;
    margin-top: 40px;
    font-size: 1.5rem;
    padding: 2px 5px;
    background-color: rgba(112, 152, 240, 0.856);   
    font-weight: 500; 
    text-shadow:1px 1px 2px grey ;     
}