responsive-index.css

@media (max-width:500px) {
    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    div.whole h3{
        transform: none;
        text-align: center;
    }
    div.main header h1{
        margin: 2% auto;
        justify-content: center;
        width: 85%;
        display: inline-flex;
    }
    div.main h2{
        text-align: center;
        padding: 2% 1% 5% 1%;
        margin: 2% auto;
        width: 80%;
        /* color: darkblue; */
    }
    div.whole {
        display: block;
        width: 100%;
        margin: 0 auto;
    }

    div.whole>div {
        margin-bottom: 7%;
        width: 80%;
        margin-left: auto;
        margin-right: auto;
    }

    div.whole > div form div.item {
        color: aliceblue;
        display: flex;
        /* border: 2px solid black; */
        padding: 1%;
    }
    div.whole > div form div.item input {
        width: 90%;
        border: none;
        border-radius: 2%;
        font-size: 1rem;
        padding: 1%;
        margin: 1%;
    }
    div.whole > div form div.item span.icons{
        margin: 1%;
        padding: 1%;
        width:40%;
    }
    div.whole > div form div.item span.icons button{
        width: 30%;
        border: none;
    }
    
}

@media (min-width: 501px) and (max-width: 960px) {
    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    div.whole {
        display: block;
        width: 85%;
        margin: 0 auto;
    }

    div.whole>div {
        margin-bottom: 7%;
    }

    form div.item {
        color: aliceblue;
        display: flex;
        /* border: 2px solid black; */
        padding: 1%;
    }

    form div.item span.icons {
        margin: 1%;
        padding: 1%;
        width: 35%;
    }
}

@media (min-width: 961px) and (max-width: 1300px) {
    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    div.whole {
        width: 95%;
        margin: 0 auto;
        display: grid;
        grid-template-columns: 48% 48%;
    }
}