How to add a custom shape to my image poster and how to have my poster image full bleed

Set the border radius to the div that the images are inside of.

1234567890 

It seems incorrect password

Hello @tuanphan i have removed the password of my website , it should work... Sorry about that. 

.image-block-outer-wrapper.combination-animation-custom.individual-animation-vertical-clip.animation-loaded .image-inset {border-top-left-radius: 20%;
-moz-border-radius-topleft: 40%;
-webkit-border-top-left-radius: 40%;
border-top-right-radius: 40%;
-moz-border-radius-topright: 40%;
-webkit-border-top-right-radius: 40%;
}

@rwp I have followed your advice, however since i am new at this I feel like i am not choosing the right div class... 

I used this and it worked for one poster image on the site ( you have no idea how happy i got) , however I added another poster image and it screwed up everything... I'm back to square one... 
Is there a way to assign the code to all the poster images on the index page ? 

I tried using this but that didn't work either ...

sqs-block-image .design-layout-poster

{ border-top-left-radius: 40%;
-moz-border-radius-topleft: 40%;
-webkit-border-top-left-radius: 40%;
border-top-right-radius: 40%;
-moz-border-radius-topright: 40%;
-webkit-border-top-right-radius: 40%;
}

I beg you help...

ps: my website is now unlocked 

Vanille

You will need to get the block id for each image.

#block-yui_3_17_2_1_1599925188392_12878 .intrinsic .image-inset {
    border-top-left-radius: 40%;
    border-top-right-radius: 40%;
}

Thank you so much @rwp its working and its fantastic! 

Do you have any insights on how to make the poster image to go full bleed by any chance ?

I used this code but again no chance...

#block-yui_3_17_2_1_1599925188392_12878{.sqs-block image-block sqs-block-image sqs-text-ready {overflow:visible;}}