style.css

@import url('https://fonts.googleapis.com/css2?family=Inter&display=swap');

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border: none;
}
body {
    font-family: 'Inter';
    font-weight: 400;
    width: 100vw;
    height: 100vh;
    background: #E5E5E5;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 36px;
}
main {
    width: 100%;
    height: 100%;
}
main > img {
    margin-left: 3rem;
}
main form {
    margin: 2rem auto;
    width: 100%;
    height: 90%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
}
#text {
    height: 100%;
    color: #0A3871;
    font-size: 2rem;
    background: none;
}
#text::-webkit-input-placeholder {
    color: #0A3871;
    font-size: 2rem;
}
textarea:focus {
    outline: 0;
}
main footer {
    margin: 40px;
}
main footer p {
    display: flex;
    gap: .5rem;
    margin: 16px 0;
    font-size: .75rem;
    opacity: 0.8;
}
.btn {
    width: 328px;
    height: 67px;
    border-radius: 24px;
    font-size: 1rem;
    text-align: center;
    transition: 10ms;
    background: #D8DFE8;
    color: #0A3871;
    border: 1px solid #0A3871;
}
.btn:hover {
    cursor: pointer;
    transform: scale(1.01);
}
#encrypt {
    background: #0A3871;
    color: white;
    margin-right: 24px;
}
.res {
    width: 30%;
    height: 100%;
    background: white;
    border-radius: 32px;
    box-shadow: 0px 24px 32px -8px #00000014;
    display: flex;
}
.searching {
    align-self: center;
    text-align: center;
    color: #343A40;
}
.searching img {
    max-width: 90%;
    margin: auto;
}
.searching h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 32px 0 16px 0;
}
.searching p {
    font-size: 1rem;
}
.found {
    align-self: center;
    width: 100%;
    height: 100%;
    font-size: 1.5rem;
    color: #495057;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
}
.found > textarea {
    width: 80%;
    max-width: 80%;
    height: 65%;
    max-height: 65%;
    margin: 40px 40px 0 40px;
    font-size: 1.5rem;
    color: #495057;
}
#copy {
    max-width: 80%;
    margin: 40px;
}