How to style images in a list with CSS - html

Question

I'm trying to make all the images I have in a list the same size and remove the bullet that gets placed beside them.
This is the HTML I'm using:
<ul id = "imageList">
<li> <img src='../img/Movie1.jpg' alt="Dunkirk"> </li>
<li> <img src='../img/Movie2.jpg' alt="Kong: Skull Island"> </li>
<li> <img src='../img/Movie3.jpg' alt="The Big Sick"> </li>
<li> <img src='../img/Movie4.jpg' alt="The Lovers"> </li>
<li> <img src='../img/Movie5.jpg' alt="Everybody Loves Somebody"> </li>
<li> <img src='../img/Movie6.jpg' alt="Happy End"> </li>
<li> <img src='../img/Movie7.jpg' alt="Okja"> </li>
<li> <img src='../img/Movie8.jpg' alt="Cars 3"> </li>
<li> <img src='../img/Movie9.jpg' alt="Despicable Me 3"> </li>
<li> <img src='../img/Movie10.jpg' alt="Baby Boss"> </li>
</ul>

Answer 1

I set the hardcoded values as squares because I don't know what your actual images look like.
ul {
list-style: none;
}
ul img {
width: 100px;
height: 100px;
}
<ul id = "imageList">
<li> <img src='../img/Movie1.jpg' alt="Dunkirk"> </li>
<li> <img src='../img/Movie2.jpg' alt="Kong: Skull Island"> </li>
<li> <img src='../img/Movie3.jpg' alt="The Big Sick"> </li>
<li> <img src='../img/Movie4.jpg' alt="The Lovers"> </li>
<li> <img src='../img/Movie5.jpg' alt="Everybody Loves Somebody"> </li>
<li> <img src='../img/Movie6.jpg' alt="Happy End"> </li>
<li> <img src='../img/Movie7.jpg' alt="Okja"> </li>
<li> <img src='../img/Movie8.jpg' alt="Cars 3"> </li>
<li> <img src='../img/Movie9.jpg' alt="Despicable Me 3"> </li>
<li> <img src='../img/Movie10.jpg' alt="Baby Boss"> </li>
</ul>

Answer 2

I use of !important for override on each other style.
#imageList {
list-style: none !important;;
}
#imageList img {
width: 50px !important;;
height: 50px !important;;
}
<ul id = "imageList">
<li> <img src='http://justcuteanimals.com/wp-content/uploads/2016/10/baby-bear-pictures-cute-animal-pics.jpg' alt="Dunkirk"> </li>
<li> <img src='http://justcuteanimals.com/wp-content/uploads/2016/10/baby-bear-pictures-cute-animal-pics.jpg' alt="Kong: Skull Island"> </li>
<li> <img src='http://justcuteanimals.com/wp-content/uploads/2016/10/baby-bear-pictures-cute-animal-pics.jpg' alt="The Big Sick"> </li>
<li> <img src='http://justcuteanimals.com/wp-content/uploads/2016/10/baby-bear-pictures-cute-animal-pics.jpg' alt="The Lovers"> </li>
</ul>