* {
    /* not affect width and height of actual elements contained */
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}


/* variables */
:root {
    --blue_col: #0A5EB0;
    --bkg_col: #EFF3EA;
    --font_col: #2A3335;
}

body {
    font-family: 'Poppins', sans-serif;
    font-size: 18px;
    line-height: 1.5;
    background: var(--bkg_col);
}

/* links */
a {
    text-decoration: none;
    color: var(--font_col);
}

/* unordered lists */
ul {
    list-style: none;

}

/* images */
img {
    max-width: 100%;
}

/* logo */
.logo {
    color: var(--font_col);
    font-size: 30px;
    font-weight: 800;
}

/* navigation bar */
.navbar {
    background: var(--bkg_col);
    padding: 20px;
}

.navbar .container {
    display: flex;
    justify-content: space-between;

}

/* format of the main menu */
.navbar .menu ul {
    display: flex;
}

.menu ul li a {
    padding: 10px 20px;
    display: block;
    font-weight: 500;
    transition: 0.3s;
}

.menu ul li a:hover {
    color: var(--blue_col);
}

/* main page content */
.main .main-container {
    display: flex;
}

/* contact */
 .bottom .contact ul {
    display: flex;
}


.contact ul li a {
    padding: 0px 10px;
    display: block;
    font-size: 28px;
    font-weight: 700;
    transition: 0.3s;
    bottom: 0;
}


/* texts */
.main-h1 {
    font-size: 30px;
    font-weight: 700;
}


/* projects */
.projects ul li a {
    padding: 10px 20px;
    display: block;
    font-weight: 500;
    transition: 0.3s;
}

.projects ul li:hover {
    background-color: #81BFDA;
}

.prj-container ul li a {
    display: flex;
}

.prj-skill {
    box-sizing: content-box;
    border-style: initial;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    color: var(--font_col);
    margin: 0 10px;
    padding: 10px 10px;
}


/* containers */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 10px;
}

.main-container {
    max-width:1000px;
    margin: 0px auto;
    padding: 310px 350px;
    align-items: center;
    justify-content: center;
}

.contact-container {
    padding: 0 10px;
    display: flex;
    margin: 0 auto;
    max-width: 1000px;
    justify-content: space-between;
}

.prj-container {
    border-color: var(--font_col);
    max-width: 1000px;
    margin: 0 auto;
    padding: 10px 20px;
}