index.css

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
    margin: 0;
    padding: 0;
}

.weather {
    margin-top: 20px;
}

.image{
    background: url(./images/sunrise0.jpg) no-repeat center center/cover;
   height: 100vh;
}

input[type="text"] {
    padding: 10px;
    width: 70%;
    border: 1px solid #ccc;
}

.cont{
    margin-top: 3%;
    margin-left: auto;
    margin-right: auto;
    padding: 20px;
    text-align: center;
    background-color: #000000d4;
    color: #ccc;
    opacity: 5rem;
    max-width: 400px;
    border-radius: 2.5rem;
    opacity: 30;
    font-family: 'Oswald', sans-serif;
}
.but{
    border-radius: .5rem;
    background: white;
    opacity: 0.5;
    color: black;
    font-size: medium;
    font-weight: bolder;
    border-style:hidden;
    width: 10rem;
    height: 2rem;
}

.sub{
    background: white;
    opacity: 0.5;
    border: none;
    margin-left: 0.2rem;
    border-radius: 20rem;
    height: 2rem;
    width: 3rem;
}
#weatherData{
    padding-top: 20px;
}
#popularCities{
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
}
.city{
    margin-top: 1%;
    margin-bottom: 1%;
    margin-left: auto;
    margin-right: auto;
    padding: 20px;
    text-align: center;
    background-color: #000000d4;
    width: max-content;
    color: #ccc;
    opacity: 5rem;
    border-radius: 2.5rem;
    opacity: 30;
    font-family: 'Oswald', sans-serif;

}