styles.css

body {
    background-color: whitesmoke;
    margin: 0;
    font-family: 'Helvetica', 'Arial', 'sans-serif';
    font-weight: 400;
    color: rgba(0, 0, 0, .87);
}

* {
    box-sizing: border-box;
}

a {
    color: black;
}

header {
    height: 101px;
    z-index: 10;
    position: relative;
    box-shadow: 0 1px 3px rgb(0 0 0 / 10%), 0 2px 2px rgb(0 0 0 / 6%), 0 0 2px rgb(0 0 0 / 7%);
}

.header-container {
    max-width: 1440px;
    margin: 0 auto;
    background-color: whitesmoke;
    height: 100%;
    display: flex;
    justify-content: space-between;
}

.logo {
    height: 51px;
    width: 51px;
}

.logo img {
    height: 100%
}

.left-nav {
    display: flex;
    height: 100%;
    align-items: center;
}

.left-nav nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.left-nav nav ul li {
    text-transform: uppercase;
    padding-left: 24px;
    font-weight: 700;
    letter-spacing: 0.1em;
    cursor: pointer;
}

.left-nav nav ul li:hover {
    color: #008248;
}

.right-nav {
    display: flex;
    align-items: center;
}

.find-store {
    display: flex;
    align-items: center;
    margin-right: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.find-store {
    padding-right: 8px;
    font-size: 20px;
}

.find-store:hover {
    color: #008248;
}

.sign-in,
.join-now {
    padding: 7px 16px;
    border: 1px solid;
    border-radius: 50px;
    font-weight: 600;
    line-height: 1.2;
    cursor: pointer;
}

.sign-in {
    margin-right: 25px;
}

.sign-in:hover {
    background-color: rgba(0, 0, 0, .06);
    transition: all .2s ease;
}

.join-now {
    color: white;
    background-color: black;
    margin-right: 25px;
    transition: all .2s ease;
}

.join-now:hover {
    background-color: rgba(0, 0, 0, .7);
    border-color: rgba(0, 0, 0, .7);
}