style.css

html {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
*, *:before, *:after {
    -webkit-box-sizing: inherit;
    -moz-box-sizing: inherit;
    box-sizing: inherit;
}

body {
    margin: 0; 
    padding: 0;
    background: #19161c;
    color: #fefefe;
    height: 100vh;
    display: grid;
    grid-template-rows: 20vh 1fr;
}

.main-title {
    text-align: center;
    margin: 0;
    padding: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
}
.container {
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    flex-direction: column;
    align-content: center;
}

.box{
    position: relative;
}

.input {
    padding: 10px;
    width: 80px;
    height: 80px;
    background: none;
    border: 4px solid #ffd52d;
    border-radius: 50px;
    box-sizing: border-box;
    font-family: Comic Sans MS;
    font-size: 26px;
    color: transparent;
    outline: none;
    transition: .5s;
}
.box:hover input, .box input:focus{
    width: 350px;
    background: #3b3640;
    border-radius: 10px;
    color: #ffd52d;
}
.box i{
    position: absolute;
    top: 50%;
    right: 15px;
    transform: translate(-50%,-50%);
    font-size: 26px;
    color: #ffd52d;
    transition: .2s;
    cursor: pointer;
}

.weather-icon-filtered {
    filter: invert(100%) sepia(0%) saturate(1%) hue-rotate(348deg) brightness(111%) contrast(99%);
}
.weather-info {
    margin: 0;
    padding: 0 1.5rem;
}

.icon-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
.icon-info {
    margin: 0;
}

@media only screen and (max-width: 360px) {
    /* .box {
        width: 80%;
        display: flex;
        justify-content: center;
    }
    .box i {
    } */
    .box:hover input, .box input:focus{
        width: 80vw;
    }

    .weather-info {
        text-align: center;
    }
}