*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0f1628;
    font-family: sans-serif;
}
.card{
    width: 250px;
    height: 300px;
    margin: 0 auto;
    background: #010c1d;
    border-radius: 8px;
    position: relative;
}
.tools{
    display: flex;
    align-items: center;
    padding: 9px;
}
.circle{
    padding: 0 4px;
}
.box{
    display: inline-block;
    align-items: center;
    width: 10px;
    height: 10px;
    padding: 1px;
    border-radius: 50%;
}
.red{
    background-color: #ff605c;
}
.yellow{
    background-color: #ffbd44;
}
.green{
    background-color: #00ca4e;
}
/* import style to get the border gradient effect */
.card::before{
    content: "";
    position: absolute;
    width: calc(101% + 1px);
    height: calc(101% + 1px);
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    border-radius: inherit;
    z-index: -1; 
    background: linear-gradient(        var(--rotation),        transparent 15%,        #00eaff,        #00eaff,        transparent 85%    );
    animation:spi,5s linear infinite ;
    -webkit-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -o-transform: translate(-50%, -50%);
    -webkit-border-radius: inherit;
    -moz-border-radius: inherit;
    -ms-border-radius: inherit;
    -o-border-radius: inherit ;
    -webkit-animation:spin 5s linear infinite ;
}
@property --rotation{
    syntax:'<angle>';
    inherits: true;
    initial-value: 0deg;
}

@keyframes spin {
    0%{
        --rotation:0deg;
    }to{
        --rotation:360deg;
    }
    
}