.hero_section-wrapper{
    min-height: 500px;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center 50%;
    margin-top: 4.1rem;
}

.hero_section-wrapper .overlay{
    background-color: rgba(0,0,0,0.6);
    min-height: inherit;
}

.hero_section{
    min-height: inherit;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--white);
    max-width: 1156px;
    margin: 0 auto;
}

.hero_section > h1{
    font-weight: 700;
    font-size: 1.5rem;
    line-height: 1.2;
    text-transform: uppercase;
}

.hero_section > span{
    text-transform: uppercase;
    font-size: 1rem;
    margin: 0 5px 5px 0;
    padding: 3px 6px 4px 6px;
    line-height: 1;
    vertical-align: middle;
    font-weight: 300;
}

.hero_section > span:first-child{
    background-color: rgba(0,0,0,8);
    margin-bottom: 1rem;
}

.hero_section > span:last-child{
    margin-top: 1rem;
}

/*case study section*/
.case_study_section-wrapper{
    margin-bottom: 3rem;
}

/*sidebar section*/
.sidebar_section{
    margin: 1rem 0;
}
.sidebar_section ul li{
    list-style-type: none;
    margin-bottom: 1rem;
    display: none;
}

.sidebar_section a{
    text-decoration: none;
}

.sidebar_section button{
    width: 100%;
    border: none;
    cursor: pointer;
    transition: all 0.3s linear;
    justify-content: center;
    font-weight: 300
}

.sidebar_section button:first-child {
    justify-content: start;
}
.sidebar_section  button,
.sidebar_section a{
    display: flex;
    gap: 1rem;
    align-items: center;
    list-style-type: none;
    color: black;
    background-color: #f8f8f9;
    font-weight: 300;
    font-size: 0.9rem;
    padding: 1rem;
}

.sidebar_section button > span{
    font-weight: lighter;
}

.sidebar_section li:last-child{
    margin-bottom: 0;
    display: flex;
    gap: 1rem;
}

.sidebar_section li:last-child > button:first-child{
    justify-content: center;
}

#problem,
#result,
#solution{
    scroll-margin: 5rem;
}

@media(min-width: 1024px){
    .case_study_section-wrapper{
        display: flex;
        align-items: start;
        margin-top: 3rem;
        gap:3rem;
    }

    .sidebar_section{
        margin-top:1rem;
        position: sticky;
        top: 6rem;
        flex: 0 0 25%;
    }

    .sidebar_section ul li{
        display: block;
    }
}