style.css

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;700&display=swap');

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

body{
    min-height: 100dvh;
    display: flex;
    justify-content: center;
    align-items: center;
    background:#8a6cff;
    font-family: 'Poppins', sans-serif;
}
.col,button{
    width:calc(100%/2 - 20px);
}
.container{
    width: 30%;
    padding: 20px 20px 8px;
    background: #fff;
    border-radius: 7px;
    box-shadow: 3px 4px 10px #555;

}

.gradient-box{
    height: 150px;
    border-radius: 7px;
    background-image: linear-gradient(to left top, #360033,#0b8793);

}

.row{
    display: flex;
    margin: 20px 0;
    justify-content: space-between;
}

.direction p{
    font-size: 1.12rem;
    margin-bottom: 8px;
}

.select-box{
    border: 1px solid #222;
    padding: 5px;
    border: 1px solid #aaa;
    border-radius: 5px;
}

.select-box select{
    width: 100%;
    border: none;
    outline: none;
    font-size: 1rem;
}

.colors{
    margin-left: 50px;
}

.colors p{
    font-size: 1.12rem;
    margin-bottom: 8px;
}

.colors input{
    height: 40px;
    width: calc(100%/2 -12px);
    outline: none;
    border: none;
    margin-right: 10px;
}

.colors input:last-child{
    margin-right: 0;
}

textarea{
    width:100%;
    color: #555;
    padding: 10px 15px;
    resize: none;
    border-radius: 5px;
    font-size: 1.05rem;
    border: 1px solid #ccc;
    font-family: 'Poppins', sans-serif;
}

.buttons button{
    color: #fff;
    cursor: pointer;
    padding: 10px 15px;
    font-size: 1.05rem;
    border: none;
    outline: none;
    border-radius: 5px;
}

.buttons .refresh{
    background-color: #6c757d;
}

.buttons .copy{
    background-color: #8a6cff;
}

@media (width <=1064px) {
    .container{
        width: 40%;
    }
}

@media (width <=800px) {
    .container{
        width: 50%;
    }
}

@media (width <=650px) {
    .container{
        width: 70%;
    }

    .colors {
        margin-left: 10px;
        padding-left: 23px;
    }
}

@media (width <=500px) {
    .container{
        width: 85%;
    }

    .colors {
        margin-left: 0px;
        padding-left: 0px;
    }

    .colors input {
        margin-right: 0px;
        width: 90%;
    }
}