:root {
    --primary-color: rgba(0, 0, 0, 0.9);
    --background-color: rgba(165, 165, 165, 0.9);
    --overlay-color: rgba(85, 85, 85, 0.85);
    --input-border-color: #ccc;
    --input-on-focus-border-color: #f90;

    --menu-speed: 0.75s;
}

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

body {
    background-color: var(--background-color);
    line-height: 1.6;
}

ul {
    list-style-type: none;
}

h1,
h2 {
    font-weight: 300;
    line-height: 1.2;
    margin: 10px 0;
}

img {
    width: 100%;
}

a {
    text-decoration: none;
    color: #333;
}

.navbar {
    background-color: var(--overlay-color);
    color: #fff;
    height: 70px;
}

.navbar ul {
    display: flex;
}

.navbar a {
    color: #fff;
    padding: 10px;
    margin: 0 5px;
}
.navbar a:hover {
    border-bottom: 2px #fff solid;
}

.navbar .flex {
    justify-content: space-between;
}




.container {
    max-width: 1100px;
    margin: 0 auto;
    overflow: auto;
    padding: 0 40px;
}

.card {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
    margin: 5px;
    padding: 20px;
}

.flex {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    justify-content: center;
    align-items: center;
    height: 100%;
}